Scaffold-bracket.



No. 676,99I. Patented June 25, I90lv. G. M. MOORE. SCAFFOLD BRACKET.

(Application filed Feb. 21, 1901.)

(N0 Model-.

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GEORGE M. MOORE, OF BUFFALO, NEYV YORK.

SCAFFOLD -BRACKET.

SPEGlEFIOATION forming part of Letters Patent No. 676,991, dated June25, 1901.

Application filed February 21,1901- Serial No. 48,320. (No model.)

To all whom it may concern:

Be it known that I, GEORGE M. Moons, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New 5 York, haveinvented certain new and useful Improvements in Scaflold-Brackets, ofwhich the following is a specification.

My invention relates to scaffold-brackets; and the objects I have inview are to provide :0 a simple and inexpensive device capable ofattachment to the shingles of a building without the use of nails, andwhereby a scaffold of any desired construction can be securelysupported.

Other objects of my invention are to so construct a bracket that thetimber or scantling supported will be entirely surrounded thereby, sothat there will be no danger of said timber or scantling tilting on onecorner should lateral strain be exerted accident-ally thereagainst, toconstruct the bracket so that it can be easily and quickly attached to abuilding, and to reduce the number of parts usually employed in such adevice.

Theinvention, stated in general terms,con sists ofa supporting memberhaving two arms formed at substantially right angles to each other,against which two sides of the timber or scantling bear, one of saidarms being provided with a serrated end slightly reduced inthickness,wl1ich is forced underneath a shingle and forms one part of aclamping-jaw, a clamping member which is pivotally secured to thesupporting member and bears against the other two sides of the timber orscantling, said clamping member having a serrated portion which formsthe other part of the clamping-jaw. and bears against the outer side ofthe shingle, and a clampingscrew whereby the bracket is securely held tothe shingle.

Referring to the drawings, Figure 1 is a View illustrating theapplication of my improved bracket to a building. Fig. 2 is a sideelevation of my bracket, showing the manner in which it is secured to abuilding. Fig. 3 is a perspective view of the same open. Fig. 4 is acentral vertical section of the same. Fig. 5 is a front elevation of thesame. Fig. 6 is a transverse section, on an enlarged scale, taken online 6 6, Fig. 4.

Referring now to the drawings in detail,

like letters of reference refer to like parts in the several figures.

The letter A designates the supporting member on which the timber orscantling is supported. It consists of two arms a a, disposed atsubstantially right angles to each other, the end of the arm a beingreduced in thickness and tapered to facilitate its insertion between twooverlapping shingles, said tapered end acting as one member of aclamping-jaw and havingserrations formed thereon to increase itsgripping power. At the angle formed by the two arms a a a securing-prongB and a lug O are formed, the prong B being disposed on the same planeas the arm a, while the lug O is disposed on a plane with the arm a. Thearm Ct is provided with an enlargement D adjacent to the tapered andserrated end portion, and in this enlargement 1) a threaded bore disformed for a purpose hereinafter disclosed. On the rear side of the arma a teat E is cast, which is embedded in a shingle in the course betweenthe tapering end of the arm a and the prong B. The outer end of the arma is bifurcated to receive the clamping member F, which is heldpivotally therein by a pivot-pinf. This clamping member consists of twoarms ff which extend in an opposite direction from the connecting-arm fand are approximately parallel to each other. The connecting-arm f andthe arm f bear against two sides of the timber or scantling and confinethe same in the bracket. The arm f forms the other member of theclamping-jaw, and to increase its gripping power it is also providedwith serrations f*.

G designates a clam ping-screw which passes through an opening in thearm f and enters the threaded bore in the enlargement D. The end of thisclamping-screw is conical and on tightening the clamping-jaw is adaptedto extend out through the rear of the arm Cb and become embedded in theshingle.

On securing the device to a building it is opened, as shown in Fig. 3.The serrated end of the arm Ct is inserted between two overlappingshingles, so as to bring the edge of the first or upper shingle againstthe enlargement D. This positions the prong below the edge of the secondor under shingle or, in other words, against a third shingle. The

lug O is next struck with a hammer, which causes the teat E to becomeembedded in the second shingle, while the prong B is forced into thethird shingle. The bracket is secured to the building sufficiently tosupport the timber or scantling which is'now placed thereon. Theclamping member F is then swung on its pivot-pin, whereby the timber orscantling is completely surrounded by the two members of the bracket.The clampingscrew G is next passed through the arm f and screwed intothe enlargement D u ntil the upper or first shingle is securely held inthe clamping-j aw. The screw passes through the arm a and its conicalend is embedded in the second shingle, thus securely holding the bracketto the building and causing the strain to be divided on the threeshingles.

Thus far reference has only been made to the securing of these bracketsto the roof of a building; but, as shown in Fig. 1 of the drawings, theymay be as readily secured to the clapboards of a building and a scaffoldof any suitable construction erected therefrom. Having thus describedmyinvention, what I claim is 1. The combination of a supporting memberhaving two arms formed at an angle to each other and adapted tosupportthe timber or scantling, a clamping member pivotally secured to saidsupporting member, and a' nectingarm disposed at right angles thereto,

and a clamping-screw passing through both members to secure them to ashingle, substantially as set forth.

4. A scaffold-bracket consisting of a supporting member having two armsdisposed at substantially right angles to each other and hav-ingasecuring-prong at the angle of said arms, aclamping member pivotallysecured to' the end of one arm of said supporting membera'nd comprisingtwo approximately parallel arms connected together by a connecting-armdisposed at right angles thereto, and a screw for clamping both memberstogether to secure them to a shingle, substantially as set forth. I

5. A scaffold-bracket consisting of. a supporting member having two armsdisposed at substantially right angles to each other and having arearwardly-extending prong formed at the angle thereof, andasimilarly-disposed teat between the latter and the end of one arm, saidend acting as one member of a clamping-jaw and being made tapering andslightly reduced in thickness to facilitate its insertion between twooverlapping shingles, a clamping member pivotally secured to the end ofthe other arm of the supporting-member and comprising two approximatelyparallel arms connected together by a connecting-arm disposed at rightangles thereto, one of said approximately parallel arms acting as theother member of the clamping-jaw, and a clamping-screw passing throughboth members of the clamping-jaw to bind the same against opposite sidesof a shingle, substantially as set forth.

6. A scaffold-bracket consisting of a supporting member having two armsdisposed at right angles to each other, a rearwardly-extending prongformed at the angle thereof, a similarly-disposed teat between thelatterand the end of one arm, and an enlargement having a screw-threadedaperture arranged on the outer face of said arm a short distance fromits end, the end of said arm acting as one member of a clamping-jaw andhaving serrations to increase its gripping power,a clamping memberpivotally secured to the end of the other arm of the supporting memberand comprising two approximately parallel arms connected together by aconnecting-arm disposed at right angles thereto,-one of saidapproximately parallel arms acting as the other member of theclamping-jaw, and a clamping-screw passing through the member of theclamping-jaw formed on the clamping member and entering the threadedaperture in the enlargement on the support ing member, saidclamping-screw having a conical end adapted to extend through thesupporting member and become embedded in a shingle, substantially as setforth.

In testimony whereof I affix my signature in the presence of twowitnesses.

GEORGE M. MOORE.

Witnesses:

EMIL NEUHART, ANDREW J. VAUGHT.

IIO

